title: [Challenges in diagnosis and classification of periodontal diseases and conditions].
authors.affiliation: Division of Periodontology, USCF School of Dentistry. armitageg@dentistry.ucsf.edu
authors.forename: Gary C
authors.initials: GC
authors.lastname: Armitage
mesh_terms: D006801:Humans; D010510:Periodontal Diseases / Q000145:classification* / Q000175:diagnosis*